(9-X)/4+X/5+X/5+(9-X)/6=3又41/60
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(9-X)/4+X/5+X/5+(9-X)/6=3又41/60
(9-X)/4+X/5+X/5+(9-X)/6=3又41/60
(9-X)/4+X/5+X/5+(9-X)/6=3又41/60
即:-x/4+2x/5-x/6=3又41/60 -9/4-9/6
整理得:-1/60x=-1/15
x=4
(-x^4)^2-2(x^2)^3×x×x+(-3x)^3×x^5
5/9x-5+3/7x+21=x 求x ,
(5/9x-4)+(40%x+6)=x
|x+4|+|5-x|
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4x+9=5x-6
(9-X)/4+X/5+X/5+(9-X)/6=3又41/60
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